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  1. Maverickmax

    Cheap LCD module & Tutorials

    Hi circuit guys If you want to buy cheap LCD modules, Press and Peel and other electronic components, please check https://uk.ebid.net/items/MaverickElecontron Also tutorials about LCD module, please go to https://maverickelectronic.blogspot.co.uk/ Have fun coding guys maverickmax
  2. Maverickmax

    CDM 16216B 16x2 LCD pin diagram required

    Hi You can check the website - Maverick Electronic for pin layout description in tutorial 1 MM
  3. Maverickmax

    3 Phase AC Input & DC PSU

    Hi I am a bit unclear on one aspect of designing the system. Firstly I have a dc power suplly which produce 200V @ maximum 200A (40kW). The DC power supply unit needs 3 phase 415V input. So what is the maximum fuse should I for 3 phase AC input? Also what is the maximum current rating...
  4. Maverickmax

    Hyperterminal for Window Vista

    Hi Since moving to Window Vista, I need a hypertermnal with setting multibuttons for my microcontroller's debug. Do you know any good software? Regards MM
  5. Maverickmax

    Converting to Hex to Code?

    Guys My friend has lost his asm file for PIC project but he had the codes inside his PIC chip. I have managed to read the content from device and save as Hex file. Now how can I convert the hex into readable code in terms of ASM? I have attached the hex file. MM
  6. Maverickmax

    Bootstrap Capacitor Calculation Problem - help

    Hi I am currently learning how to calculate the bootstrap capacitor for IR2110 Application. So far I have identified every parameters apart from one: Qgate 27E-06 Frequency 21600 Icbs(leak) 0 Qls 5.00E-09 Vcc 14 Vf 0.78 Vls 4.5 Iqbs(max) 230E-06 Vmin ?? I use the forumla from Application Note...
  7. Maverickmax

    High and Low Level engineering

    Hi I keep hearing the words such as high level and low level electronic/software/control engineering crpping up in various documents and job adverts. Can you please kindly tell me what are they? What is the different between high and low level in terms of software, electronic and control...
  8. Maverickmax

    Selenium Rectifier Module

    Hi I have a selenium rectifier with me and I need to know how to test it with DMM to confirm it is working or not. Do you know anything about it? Regards MM
  9. Maverickmax

    igbt performing tests and analysis

    Re: igbt Guy I have not heard anything from you. Please advise me asap MM
  10. Maverickmax

    Dual Diode Module - unexpeted voltages

    Re: Dual Diode Module You have made a very good point! Why didn't I think of that in the first place?! I will double-check it on Monday. Regards M Joshi
  11. Maverickmax

    Dual Diode Module - unexpeted voltages

    Dual Diode Module Hi I have measured my dual diode with diode check from DMM and the first reading of first diode revealed 0.4V and 0.8V on the second diode. It is clearly the voltage drop between two diodes are different. How can I tell which one of them is good or bad? MM I have attached...
  12. Maverickmax

    igbt performing tests and analysis

    Re: igbt Dear sir The IGBT module that I am currently using operates up to 400V at maximum 300A. It operates ok below 100A but IGBT broke down above 100A. MM
  13. Maverickmax

    igbt performing tests and analysis

    igbt Hi I am fully aware that the previous post mentioned how to test the IGBT with DMM and a 9V battery. However I discovered that a colleague of mine did further tests on IGBT which I have not seen the tests before. I could have asked him about his test but there was a time constraint as I...
  14. Maverickmax

    Microcontroller - general protection

    Hi I am in the process of writing my specification to cover every angle of protection microcontroller from interferences. Is there any good book or pdf describe a great deal of circuits to protect ADC channels, eliminating noise in the power distribution, etc for me to look into? Regards MM
  15. Maverickmax

    How to test SCR/thyristor?

    how to test a thyristor Hi I am currently carrying out a damage on battery charger and stumbled on problem as it would not operate. I suspected it was a thyristor and I have no idea how to test it. Two thyristors are in the thyristor bridge circuit configuration with two subbers cicuit...
  16. Maverickmax

    In-place algorithm for 4 points FFT

    inplace algorithm Hi I am attempting to use in-place algorithm for 4 points FFT based on radix-4. I try to work out on paper but I keep losing the 1st original data which will cause further problem. For example INPUT OUTPUT INPUT OUTPUT 1 2 2 2 1...
  17. Maverickmax

    Problem with calculating FFT based on Radix-4 in Excel

    FFT Hi I have been trying to calculate FFT based on Radix-4 in Excel. Also I have been comparing my result with matlab. But I am stuck at the moment because I felt something did not seem to be correct. Please find the attached file. Any help would be appreicate MM
  18. Maverickmax

    Radix-2 FFT equations

    radix-2 fft Any explaination? MM
  19. Maverickmax

    Radix-2 FFT equations

    radix 2 fft Hi As I am learning to implement FFT algorithm in C. I am aware some of these equations are related to buttefly calculation such as a+bW^k and a-bW^k and cos(2PI/N)-jsin(2PI/N). But I am struggling to understand why sin(x)*Im2 are needed in equation 1 and 2. Also cos(x)*Im2 in...
  20. Maverickmax

    Help : Converting 8 bit to 16 bit

    signed 8 bits Hi I am struggling to understand why negative 8 bit convert to 16 bit ? What about positive? What is the benefit? if (data[i]&0x0080) data[i] += 0xFF00; // convert to negative 16-bit else data[i] = data[i]; end

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